/*启用伸缩布局*/
.flex-enable {
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
}

/*子元素横向排列*/
.flex-row {
  flex-direction: row;
}

/*子元素平均分布在父容器中*/
.flex-justify-space-around {
  justify-content: space-around;
}
